Some software developer got so tired of repeating the same old arguments to climate change skeptics that he created a Twitter bot to do it for him:
Every five minutes, it searches twitter for several hundred set phrases that tend to correspond to any of the usual tired arguments about how global warming isn’t happening or humans aren’t responsible for it. It then spits back at the twitterer who made that argument a canned response culled from a database of hundreds. The responses are matched to the argument in question — tweets about how Neptune is warming just like the earth, for example, are met with the appropriate links to scientific sources explaining why that hardly constitutes evidence that the source of global warming on earth is a warming sun.
You can actually follow this bot on Twitter and test it out if you’re so inclined (via Jeff).